/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef WEBGL_ACTIVE_INFO_H_ #define WEBGL_ACTIVE_INFO_H_ #include "GLDefs.h" #include "mozilla/Attributes.h" #include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS #include "nsISupportsImpl.h" // NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING #include "nsString.h" #include "nsWrapperCache.h" namespace mozilla { class WebGLContext; class WebGLActiveInfo final : public nsWrapperCache { public: NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLActiveInfo) NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLActiveInfo) virtual JSObject* WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto) override; WebGLContext* GetParentObject() const { return mWebGL; } WebGLContext* const mWebGL; // ActiveInfo state: const uint32_t mElemCount; // `size` const GLenum mElemType; // `type` const nsCString mBaseUserName; // `name`, but ASCII, and without any final "[0]". // Not actually part of ActiveInfo: const bool mIsArray; const uint8_t mElemSize; const nsCString mBaseMappedName; // Without any final "[0]". bool IsSampler() const; WebGLActiveInfo(WebGLContext* webgl, GLint elemCount, GLenum elemType, bool isArray, const nsACString& baseUserName, const nsACString& baseMappedName); /* GLES 2.0.25, p33: * This command will return as much information about active * attributes as possible. If no information is available, length will * be set to zero and name will be an empty string. This situation * could arise if GetActiveAttrib is issued after a failed link. * * It's the same for GetActiveUniform. */ static WebGLActiveInfo* CreateInvalid(WebGLContext* webgl) { return new WebGLActiveInfo(webgl); } // WebIDL attributes GLint Size() const { return mElemCount; } GLenum Type() const { return mElemType; } void GetName(nsString& retval) const { CopyASCIItoUTF16(mBaseUserName, retval); if (mIsArray) retval.AppendLiteral("[0]"); } private: explicit WebGLActiveInfo(WebGLContext* webgl) : mWebGL(webgl) , mElemCount(0) , mElemType(0) , mBaseUserName("") , mIsArray(false) , mElemSize(0) , mBaseMappedName("") { } // Private destructor, to discourage deletion outside of Release(): ~WebGLActiveInfo() { } }; ////////// bool IsElemTypeSampler(GLenum elemType); } // namespace mozilla #endif // WEBGL_ACTIVE_INFO_H_